Figure 2 | Scientific Reports

Figure 2

From: Prefrontal responses to Stroop tasks in subjects with post-traumatic stress disorder assessed by functional near infrared spectroscopy

Figure 2

Mean Stroop-evoked hemodynamic changes of HbO2 in left DLPFC (i.e., channel 34 shown in Panels (E,F)) from both groups. (A,B) Group-averaged HbO2 response from the healthy group evoked by Stroop1 and Stroop2 tasks, respectively. (C,D) Group-averaged HbO2 response from the subjects with PTSD evoked by Stroop1 and Stroop2, respectively. In all four panels, the thick black bars represent the stimulation periods; the red lines represent the mean time courses of HbO2; the blue lines represent the mean time courses of Hb; the error bars represent the standard errors of mean. (E) It shows the position or location of channel 34 on a standard human brain template. (F) It shows the configuration of fNIRS channels on the left frontal cortex. Red circles represent light sources, blue squares represent detectors, and gray ellipses represent the nearest source-detector pairs (as channels) to measure the brain activities.

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